She writes that in some cases, you don’t have to respond, but next illustrates that you should start a dialogue.

“Now, obviously, if your boss is saying things like ‘let me know today’ or following up on Sunday to ask why you haven’t yet responded to the email he sent on Saturday, then it’s pretty clear that he does expect responses over the weekend,” Green writes. “But if this isn’t the case, then I would either a) ignore the emails until you’re back at work on Monday, or b) ask him—as in, ‘Hey, I’m assuming that it’s fine for me to wait to reply to emails sent over the weekend until I’m back at work on Monday, unless it’s an emergency. Let me know if that’s not the case.”